Dissinger Aubrey, Kwasek Karolina
Department of Zoology, Southern Illinois University, Carbondale, IL, 62901, USA.
Department of Biological Sciences, University of New Hampshire, Durham, NH, 03824, USA.
Sci Rep. 2025 Aug 7;15(1):28848. doi: 10.1038/s41598-025-13802-w.
Social and physical environment can largely influence behavioral phenotypes in fish. Additionally, developmental environment may not only influence the behavior of an individual, but also that of its offspring. The objective of this study was to investigate the effects of parental social experience (social housing or chronic isolation) on offspring feeding behavior, growth performance, and intestinal health when fed fishmeal-based or soybean meal-based diets. Offspring from zebrafish raised in chronic isolation (CIO) and offspring from zebrafish raised in social housing (SHO) were randomly assigned to 3.0 L tanks with 25 fish per tank. Each tank was randomly selected to be fed either a fishmeal-based (FM) or soybean meal-based (SBM) diet. There were three replicate tanks (n = 3) for each of the four treatment groups (SHOF, SHOS, CIOF, CIOS) with a total of 12 tanks. At the end of the experiment, the offspring of the chronically isolated parents had grown significantly more than the offspring of the socially housed parents regardless of diet type. However, the SHO fish consumed more as a percent of tank biomass during the feed intake tests when compared to the CIO fish of the same diet type. Fish fed with a SBM-based diet had higher numerical expression of inflammation-related genes in the gut in both offspring origin groups suggesting some inflammatory response to the diet. Overall, it appears that parental social experience had an influence on the growth performance of offspring, but the mechanisms remain unclear.
社会和物理环境在很大程度上会影响鱼类的行为表型。此外，发育环境不仅可能影响个体的行为，还可能影响其后代的行为。本研究的目的是调查亲代社会经历（群居或长期隔离）对以鱼粉为基础或大豆粕为基础的日粮喂养的后代摄食行为、生长性能和肠道健康的影响。将长期隔离饲养的斑马鱼后代（CIO）和群居饲养的斑马鱼后代（SHO）随机分配到3.0升的水箱中，每个水箱放25条鱼。每个水箱随机选择投喂以鱼粉为基础的（FM）或大豆粕为基础的（SBM）日粮。四个处理组（SHOF、SHOS、CIOF、CIOS）各有三个重复水箱（n = 3），共12个水箱。在实验结束时，无论日粮类型如何，长期隔离的亲代的后代生长显著超过群居亲代的后代。然而，在摄食测试中，与相同日粮类型的CIO鱼相比，SHO鱼作为水箱生物量的百分比消耗更多。在两个后代来源组中，以SBM为基础日粮喂养的鱼肠道中炎症相关基因的数值表达更高，表明对该日粮有一些炎症反应。总体而言，亲代社会经历似乎对后代的生长性能有影响，但其机制仍不清楚。
